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Pertanyaan

J i k a space r a t a a n space d a r i space x subscript 1 comma x subscript 2 comma horizontal ellipsis comma x n space a d a l a h space a comma space m a k a space j u m l a h a n space d a r i space open parentheses 1 third x subscript 1 plus 3 close parentheses comma space open parentheses 1 third x subscript 2 plus 5 close parentheses space.... comma open parentheses 1 third x subscript n plus open parentheses 2 n minus 1 close parentheses close parentheses space a d a l a h space...

  1. 1 third a n plus n squared plus n

  2. 1 third a n plus n squared plus 2 n

  3. 1 third a n plus n squared plus 3 n

  4. 1 third a n plus n squared plus 4 n

  5. 1 third a n plus n squared plus 5 n

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N. Rahayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

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R a t a a n space n space d a t a space a d a l a h space a comma space b e r a r t i space colon x with bar on top equals fraction numerator x subscript 1 plus x subscript 2 plus x subscript 3 plus horizontal ellipsis plus x subscript n over denominator n end fraction a equals fraction numerator x subscript 1 plus x subscript 2 plus x subscript 3 plus horizontal ellipsis plus x subscript n over denominator n end fraction left right double arrow x subscript 1 plus x subscript 2 plus x subscript 3 plus horizontal ellipsis plus x subscript n equals a n space.... left parenthesis 1 right parenthesis 1 third x subscript 1 plus 3 plus 1 third x subscript 2 plus 5 plus 1 third x subscript 3 plus 7 plus horizontal ellipsis plus 1 third x subscript n plus open parentheses 2 n minus 1 close parentheses 1 third stack stack open parentheses x subscript 1 plus x subscript 2 plus x subscript 3 plus horizontal ellipsis plus x subscript n close parentheses with underbrace below with a n below plus stack stack open parentheses 3 plus 5 plus 7 plus horizontal ellipsis plus 2 n minus 1 close parentheses with underbrace below with n over 2 open parentheses a plus u subscript n close parentheses below 1 third a n plus n over 2 open parentheses 3 plus 2 n minus 1 close parentheses 1 third a n plus n over 2 open parentheses 4 plus 2 n close parentheses 1 third a n plus 2 n plus n squared

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